The Mazda 4.30 ratio ring and pinion set is suitable use on the following rotary application: 1987-1991 TURBO II RX-7. Alternate axle ratios are available for special applications. These ratios interchange exactly with the stock parts and should be ...

We the Mazda Competition Parts Department competition differential mount (FCY1-28-680) for the 1986-92 RX-7 (all models). This mount features rubber material that is approximately 40% stiffer than the stock mount. One required per vehicle, fits on left ...

We offer the Mazda Competition Parts Department competition transmission mounts for the 1986-92 RX-7 (all models). This mount features rubber material that is approximately 40% stiffer than the stock mount. Sold individually, two required per vehicle.

We offer the Mazda Competition Parts Department competition differential casing mounts (FBY1-28-890) for the 1986-92 RX-7 (all models). These mounts feature rubber material that is approximately 40% stiffer than the stock mount. Sold individually, two ...

We offer the Mazda Competition Parts Department stop washer mounts (FBY1-28-880) for the 1986-92 RX-7 (all models). These mounts feature rubber material that is approximately 40% stiffer than the stock mount. Sold individually, two required per vehicle. (...

We have available the Mazda OEM Differential Side Bearings for all 1971-92 Rotary (Non-Turbo) differentials. (2 required) Changing from the standard differential to the limited slip differential is a fairly easy job. This modification requires only a few ...

Differential Side Bearing (2 required) - Changing from the standard differential to the limited slip differential is a fairly easy job. This modification requires only a few special tools (consult the factory shop manual) and two (2) new bearings. ...

Differential Front Seal 1986-92 Non Turbo - When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut and seal, and mandatory to change the crush tube. The parts we offer are Mazda OEM Factory parts.

Differential Front Seal 1987-91TURBO II - When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut and seal, and mandatory to change the crush tube. The parts we offer are genuine Mazda OEM Factory parts.

We have available the Mazda OEM Front Pinion Bearing for all 1971-92 Rotary (Non-Turbo) differentials (1 required) When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut, and seal, and mandatory to change the ...

Front Pinion Bearing 87-91 Turbo - When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut and seal, and mandatory to change the crush tube. The parts we offer are genuine Mazda factory parts.

Rear Pinion Bearing 1986-92 Non Turbo - When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut and seal, and mandatory to change the crush tube. The parts we offer are Mazda OEM Factory parts.

Crush Tube 1986-92 Non Turbo - When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut and seal, and mandatory to change the crush tube. The parts we offer are Mazda OEM Factory parts.

Crush Tube 1987-91 TURBO II - When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut and seal, and mandatory to change the crush tube. The parts we offer are Mazda OEM Factory parts.

Pinion Lock Nut 1971-85 ALL & 1986-92 Non Turbo - When replacing the pinion in any differential, it is wise to replace the pinion bearings, locknut, and seal, and it is mandatory to change the crush tube. The parts we offer are Mazda OEM Factory parts...